“…Although size structuring is not influenced by predatory or competitive interactions between native and introduced fishes in this system, it is likely that a variety of ecological and evolutionary mechanisms influence community dynamics and ecosystem processes (Fritschie & Olden, ). Regular evaluation of the population size structure may provide a cheap and simple way of monitoring food web structure, as body size is usually positively (Romanuk, Hayward, & Hutchings, ), but sometimes negatively (Burress, Holcomb, Bonato, & Armbruster, ) correlated with a species’ trophic position. Importantly, quantifying both intra‐ and interspecific variations in body size can serve as an important indicator of niche overlap and the functional variation (or redundancy) present in a community (Guillemot, Kulbicki, Chabanet, & Vigliola, ; Micheli & Halpern, ).…”